|
10-mpg
Istas,I tossed your numbers around on the calculator.A jump from 30-mpg to say 40-mpg would be a 33% increase.If say,your mpg were at 55-mph,then to get an extra 10-mpg would require a 66.6% drag reduction if you were going to use streamlining exclusively.That would require dropping the Subarus drag coefficient down to Cd0.11.If you can imagine GM's Sunraycer of 1987,that's what we're talking about.------- Low rolling-resistance tires would help remedy some of the challenge.------- I like the mods you've done.Consider a bi-wing,or tri-wing rear deck to clean up some of the turbulence behind the roof and extend it out even with the length of the rear bumper.Ford's German Merkur Xr4Ti will give you some idea of a multi-vane spoiler.And use Search EcoModder to find Project: permanent Kamm back for Metro to find a template to gauge angles and curvature for the spoiler.
|